Punching-machine



(No Model.) 2 Sheets'Sheet 1.

J. M. RILEY. PUNUHING MAGHINB.

N0. 428,414. Patented May 20, 1890.

WITNESSES: INVENTDR BY m, ATTYYS.

1s vz-mns cm, FHDYO-UTNQ, WASHINGTON n c (No Model) 2 Sheets-Sheet 2.

J. 1VL-RILEY. PUNGHING'MAGHINE.

140428414. Patented May 20, 1890.

WITNESSES: INVENTDR.

4% John, 4120131 05 BY Ma .ATTYS.

UNITED STATES PATENT OFFICE.

JOHN M. RILEY OF NElVARK, NElV JERSEY.

PUNCHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 428,414, dated May 20,1890.

Application filed April 5, 1889. Serial No. 306,105- (No model.) i

To all whom it may concern:

Be it known that I, JOHN M. RILEY, a citizen of the United States,residing at Newark, in the county of Essex and State of New J ersey,have invented certain new and useful Improvements in Punching-Machines;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, referencebeinghadto the accompanyingdrawings, and to letters of reference marked thereon,which form a part of this specification.

The object of this invention is to obtain a direct reliable centralvertical motion to the punch or tool shaft in a vertical punchingmachinein a simple manner.

The invention consists in the improved punching-machine, and thecombination and arrangement of parts thereof, as willbehereinafter morefully set forth, and finally embodied in the claim.

Referring to the accompanying drawings, in which like letters ofreference indicate corresponding parts in each of the several figures,Figure l is a front elevation of a vertical punching-machine embodyingmyimprovement, with part of the bed-plate in section. Fig. 2 isavertical section through line as. Fig. 3 is a cross-section throughline y. Fig. 4 is a section on line 2, showing the arrangement of aloose cylindrical sleeve on the driving-shaft; and Fig. 5 is a sectionthrough line as, Fig. 1, showing a cam-wheel with cam projection securedto the main shaft.

In said drawings, A represents the frame of a punching-machine, in whichrevolves in suitable bearings '12 n, Fig. 4, a driving-shaft a, providedwith loose driving-pulley b, which also serves as a balance-wheel. Onthis shaft is secured an eccentric 0 (shown in Fig. 2) for operating atool-shaft d by means of slid ing bearings e e on top of a flatprojection 01' on the upper end of the tool-shaft d.

On the upper side of the bearings e is a plate f, secured to theprojection d by bolts 9 g, of sufficient length to allow the bearings ee to slide between them on slides or ways 6 6, Fig. 2.

From the upper surface of the plate f extends a rod or shaft h, whichmoves in bearings in the upper part of frame A and serves as asteadying-guide for the tool-shaft d. To the bottom of the shaft cl issecured an adjustable guide-block and tool-holder 2', with openings inlc, to allow free access to nuts on m, for securing and adjusting theguide-block to the tool-shaft d. This guide-block and tool-holder iisprovided on one side with angular projections n n, to slide incorresponding recesses in the frame A, as shown in Fig. 3. Oppositethese recesses are secured to the frame metallic bars or rods 0 0,provided with slots on their inner sides adapted. to receive steel bars19 p, which serve as slides for the other side of the guide-block 2'.These slidebars 19 p are adjustable laterally by means of bolts 0" r, asshown clearly in Fig. 3.

Upon the bottom of the guide-block and tool-holder t is formed anannular shoulders, to receive a punch or tool 15, which is held inposition by a set-screw 8. To the bottom of the frame and directly underthe punch or tool is secured by any desired means a bed or block to ofordinary construction. Upon the driving-shaft a, and near its ends, arefirmly secured collars w w, Fig. 1, to prevent lateral motion or play tothe shaft when in operation. Within the bearings on which thedriving-shaft revolves are fitted and adj usted loose perforatedcylindrical collars Z, extending the whole length of the bearing, andsurrounding the main shaft and held in position by the bearings by therigid collars w w, as shown in Fig. 4, where one of the bearings isshown in section. These collars H are loosely arranged on the shaft andcan turn in any direction or be at rest while the press. is inoperation. The perforations in the collar 1 allow the lubricatingmaterial to come directly in contact with the shaft when a lubricatingmaterial is employed; but such lubricating material is not necessary, asthe collars being loose on the shaft and free to move in eitherdirection, there could be no perceptible friction, as will be manifest.

In Fig. 5 of the drawings is shown in section an ordinary cam-wheel 3,with cam projections 4 rigidly secured to the shaft a for engaging a rodor bar connected with a pivoted lever connected with the engaging anddisengaging clutch mechanism on the endof the shaft for stopping andstarting the press, as shown in Fig. 1. The loose driving-pulley is alsoconnected with the clutching mechan- 1sm.

I have not described in detail the clutching mechanism, as I make noclaim to it specifically, as any ordinary clutching mechanism can beused.

By providing the punch or tool shaft with the upward extension h and theguide-block 'i all lateral movement in any direction is entirelyprevented and a positive and direct central vertical movement isimparted to the punch or tool shaft.

By the use of the eccentric on the main shaft working in the slidingbearings great power and steadiness and uniformity of motion areimparted to the tool-shaft, as by the revolution of the eccentricthebearings c 6 Will move slightly forward and back between the parts f anda, on which they are adapted to slide.

By means of the screws m m on the guideblock and tool-holder the punchor tool can be adjusted to any thickness of metal to be punched.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In apunching-machine, the combination of the frame having the notchesand bars formed with grooves, the tool-holder having lugs or ribsengaging said notches, and bars fitting in said grooves, the tool-shafthaving the clamping-nuts thereon and formed with the fiat projection,the plate having the extension or guiding-stem, the bearings between theplate and projection, the driving-shaft having the eccentric forengaging said bearings, the perforated sleeve on the driving-shaft, andthe collars on said shaft, all arranged for operation as described.

In testimony that I claim the foregoing I have hereunto set my hand this2d day of April, 1889.

' JOHN M. RILEY.

Witnesses:

OLIVER DRAKE, E. L. SHERMAN.

